The accusative form a has variant forms la and na. These alternative forms appear depending on the ending of the preceding word. The form la is used when the preceding word ends in -r or -s. The na form is used when the preceding word ends in -u or a diphthong. These alternative forms are then suffixed to the preceding word.

The accusative also forms contractions when it immediately follows an indirect object pronoun. For example, Dou che a(“I gave you it”) contracts to Dou cha.